他们决定在主楼与附属建筑物之间的过道上面加盖屋顶。

They decided to cover in the passage between the main building and the annex.

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主楼配建有附属的建筑物。

The annex has been built on to the main building.

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主楼配建有附属的建筑物。

The annex has been built on to the main building.

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